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Note 6 - Stock-based Compensation (Tables)

6 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

		Three Months E nded September 3 0 ,								Six Months E nded September 3 0 ,
		201 7				201 6				201 7				201 6
Total cost of stock-based compensation charged against income before income taxes		$	445			$	412			$	985			$	841
Amount of income tax benefit recognized in earnings			108				110				120				171
Amount charged against net income		$	337			$	302			$	865			$	670
Impact on net income per common share:
Basic		$	0.09			$	0.08			$	0.23			$	0.18
Diluted			0.09				0.08			$	0.22				0.18

Share-based Compensation, Stock Options, Activity [Table Text Block]

		Number of Shares				Weighted- A verage Exercise Price per Share				Weighted- A verage Remaining Contractual Term				Aggregate Intrinsic Value (000s)
Outstanding at March 31, 2017			510,361			$	75.78				5.0			$	23,956
Stock o ptions granted			95,605				123.09				5.5
Stock o ptions forfeited			(40,661	)			93.74				5.1
Stock o ptions expired			(96	)			97.78				4.5
Stock o ptions exercised			(50,503	)			61.09				--
Outstanding at September 30, 2017			514,706				84.58				4.8			$	33,320
Exercisable at September 30, 2017			162,831				60.05				4.0			$	14,536

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

		Number of Shares				Weighted- A verage Grant-Date Fair Value
Unvested at March 31, 201 6			373,766			$	22.49
Stock o ptions granted			95,605				39.00
Stock o ptions forfeited			(40,661	)			26.84
Stock o ptions vested			(76,835	)			20.93
Unvested at September 30, 2017			351,875				28.41

X

- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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